enzyme cofactors การใช้

Some 4Fe 4S clusters bind substrates and are thus classified as enzyme cofactors.
Apolipoproteins also serve as enzyme cofactors, receptor ligands, and lipid transfer carriers that regulate the metabolism of lipoproteins and their uptake in tissues.
Metal cofactors are bound tightly to specific sites in proteins; although enzyme cofactors can be modified during catalysis, they always return to their original state by the end of the reaction catalyzed.
The coupling of photochromic units to enzymes or enzyme cofactors even provides the ability to reversibly turn enzymes " on " and " off ", by altering their shape or orientation in such a way that their functions are either " working " or " broken ".
Structurally, it is a dinucleotide that only differs from the house-keeping enzyme cofactor, NADP by a hydroxyl group ( replacing the nicotinamide amino group ) and yet this minor modification converts it into the most potent Ca 2 +-mobilizing second messenger yet described.